Built-up member for paper-pulp engines



Sept, 2 A92@ 3,507,305

A. LE R. BOLTON BUILT UP MEMBER FOR PAPER PULP ENGINES Filed Nov. 21, 1923 2 sheets-Smm l Sept. 2i, i924., LSZBOS A. LE R. BOLTON BUILT UP MEMBER FOR PAPER PULP ENGINES Filed Nov. 2l, 1923 2 Sheets-Sheet 2 1N V EN TOR.

'ATTORNEYA Patented Sept. 2, 1924.

ARCHER LE ROY BOLTON, OF NORT ANDOVER, IMIASSAGHBE'LTS.l

BUILT-UP MEMBER FOR PAPEEFP'ULP ENGINE.

Application led November 21, 1923. Serial No. 676,034.

To all whom it may concern Be it known that` l, ARCHER LE ROY BOLTON, a citizen of 'the United States, residing at North Andover, in the county of Essex and State of Massachusetts, have invented certain vnew and useful improvements in Built-up Members for Paper-Pulp Engines, of which the following is a specification. l

Thislinvention relates to paper manufac` turing, and has to do particularly with pulp engines such as are known as beaters, and such as are kn'own as Jordan engines.

In what are known as beater enginesv there is a cylindrical beater roll from the curved surface of which project bars or blades which serve to operate on the paper stock in a'relatively slow manner, While in Jordan engines, there is a casing of truncated conical form from which project knives, and inside of which revolves a plug having bars on lits outer surface, such plug revolving at a very high rate of speed.

lt would be possible taamake beater rolls and also Jordan shells and plugs of solid metal, but for many reasons this is objectionable. l

lt has been found more satisfactory in the trade to fasten the bars, blades or knives at intervals, to the metal body and to drive in between them wooden members which.

hold them in place inla more or less elastic manner, and in such a way that there is no rattle nor vibration.

A beater roll operates relatively slowly on unconlined stock and the wear on the blades and Woods is not very great, but in the Jordan engine, the stock is confined and operated on at a high rate of speed, with 'the result that the exposed face of the wood becomes worn and weakened.

'When these wooden supports become weakened on their faces, if the blades,lbars or knives, encounter any hard substance the weakened wood on the face is crushed and the metal displaced so that repairs are necessary. lin an application now pending, Serial Number 609,409 o Dec. 28, 1922, Covering for plug of Jordan engines, lhave described the uses of protecting metall strips vpositioned on the face of the wooden supports or woods -in a Jordan plug, but 1n this application I intendto cover similar strips or trussplates applied to a Jordan shlell as well as a plug, and also to a beater ro l.

All three have a metal body of circular cross sections the cen-tres of which form a straight axial line, and all .have metal bars which may be called blades, bars or knives, each of 'which if stright, is disposed in a plane which passes through the axial line, or if curved or bent is radially disposed edgewise with reference to said axial line. v lVith the plug and roll and in some types of shells, these bars 4are fastened at one edge to the metal body,fand in all cases I use wooden supports between the adjoining metal bars together with metal truss plates positioned substantially parallel or concentric to the face of the metal body,

which 'truss plates rest on the wooden supports and are fastened between adjoining bars medially betweeny their opposite edges.

These truss plates protect the Woods from wear and dislntegration, and also greatly strengthen the construction because they support the bars near the middle line o1? their width while inthe old construction where the barsy lit in grooves, the leverage on a groove is tremendous, if the face oi the woods is worn away or is not strong enough' to resist the ressure.

lt is not necessary owever, that my truss plates should lit with machined accuracy between the bars, as a slight yielding is not objectionable, and in fact may be an advantage in taking up shocks.

In all these devices, the woods or wooden supports are preferably when d forced or driven in between the bars. en they swell, the woods hold the bars firmly in position and help to take up any vibration which occurs. The wooden supports therefore, serve as cushions.

By using my. truss plates on top of the woods I have a middle line of support on each side of each bar and in most constructions another line of support at the bottom. This bottom line of support may be grooves, welding or supplementary bottom truss plates.

My truss plates may be used with a Jor dan plug having a continuous conical body a skeleton body made u of a series oi spiders, a removable, built-np jacketA for beater roll.

tion of the In the drawings, Fig. 1 is a side elevalug for a Jordan' engine, removed there rom and equipped with my device.

Fig. 2 is a fragmentary enlarged section, as on the line 2-2 of Fig. 1.

30, 30 represent the woods which are of wedge and key shape of a .well-known type, forced in radially between the short bars D, and 31 represents similar woods forced in between the long bars C, C up to the inner Fi 3 is a detail sectional side elevation end of the bars D.

showing part of a'plug body formed of a series of Aspiders instead of a continuous ig. 4fis a sectional view similar to Fig. 2,

showing the application of my device to another typeof odily removable covering.

Fig. 5 is a sectional view showing part of a Jordan shell with a removable lining with my device applied thereto.

Fig. 6 is a sectional elevation showing thev inside of a Jordan shell with a few knives and woods in place.

Fig. 7 is a sectional elevation enlarged'on line 7-7 of Fig. 6. i

Fig. 8 is a sectional elevation of another modification of a Jordan shell.

V Fig. 9 is a longitudinal sectional elevation showing a modified form of truss plate which might be used with a Jordan plug or shell or with abeater roll.

Fig. 10 is an elevation of a beater roll built up of spiders with some of the bars, woods and my truss plates in position.

Fig. 11 is a detail from the `right of Filg. 10.

ig. 12 and Fig. 13 are details of beater bars lin position. i

Fig. 14 is a sectional detail showing a modified type of truss platel applied to a beater roll. Fig. 15 is a'perspective view showing how my truss plates may be modified in configuration.

Fi s. 16 and 17 show end views of different orms.

Figs. 18 and 19 show side elevations of dierent forms of truss plates. v

` In the drawings, A represents the shaft of a Jordan engine plug B which has a large head 11 where the ring 7 is shrunk on, and a small head 10 where the ring 6 is shrunk on,

with a hollow truncated conical body 20 be tween them.

Running longitudinally of shell 20 are the exterior longitudinal slots 21 and 22 in which are located the long bars C and the short or intermediate bars D in adjacent slots. The long bars C are shown as located in slots 21 and the short bars D in slots 22. The short `at a point well u Near the inner end, the woods 30 are recessed or notched at 32 to a depth equal to the thickness of the metal strlpsH and the surface of the woods 31 is at the same height as 32- so that the strips I-I can rest flat and smoothly on them, with their top faces level with the top faces of woods 30.

I prefer to have the woods 30 extend down to the inner ends of short bars D, and to have the metal strips H slotted at 63 to pass beyond the inner end of a short bar D as thereby the inner end 40 o'f each bar, which is generally a weak spot, is supported more rigldly.

Strips H-are shown as having at the small end holes 61 for machine .screws suchl as 71 which pass through them and throughA the woods into the body 20.

They are also shown as having' such screw holes 61 for similar screws 71 at their inner end. Intermediate with these ends are the holes 62, 62 through which wood screws 70 may be passed into the woods 31 or into the woods 30. i

As the greatest strain and wear comes on the small end, I find that if any machine screws alone, which do not enter the metal,

are all that is necessary.

My strips being located between the bars from their bases and extendin around t e plug in annular form, not on y protectl the wood underneath from the wear and action of the stock but hold the K bars much more firmly in position.

However, while vit is desirable that the woods should be forced into position and should swell so as to hold the bars firmly and help take up the vibration, it is not necessary that my metal strips should fit with an acl curate drive fit.

As shown at Y, Y, Fig. 2, if vthere is a slight space between the strip and the bars, it is impossible ier the bar to tip over more than a very slight extent before 1t is stopped and held by the strip.

The dotted line X in Fig. 2 shows the usual manner in which the woods wear dow-n on one side, thus leaving the bar unprotected and unsupported on that side.

If the bar is held merely at its base in a groove 21 or 22, it will break or tip over, but with my metal strips extending around the plug between bars, no one bar can fall over.

It is obvious that my supporting and protecting strips might be cut in various other ways to protect the woods only or, preferi ably, to protect the woods and also laterally brace the bars at a line relatively high up from their bases'.

' In Fig. 3, I show a construction of plug wherein the body, instead of being a continuous member, such as shown at 20, with continuous longitudinal grooves, consists of a series of spiders, such as 80, 80, of varying diameters, in the outer rims of which are bar slots, such as 81, so aligned as to receive the bars C or D, as the case may be.

In Fig. 4, I show another type of removable covering, 90 represents a continuous conical plug body of the same type as 20, and upon this is -placed a thin sheet metal shell 91 of conical shape upon which are built up the bars C, woods 31 and protecting strips I-I.

These strips are attached to the woods as by screws 70, and the whole structure may beattached to the permanent body 90 by -means of machine screws 71. Y

lnstead of slots, the bottom edges of the bars may be spot-welded at 92 to the sheet metal shell 91, thereby supporting the bases, while the strips H form a second line of metallic support medially between the top and bottom of each bar. The whole built-up jacket can be removed at will.

In the claims, when I refer to means to hold the bars in place from radial and longitudinal displacement, I refer to the slots or spot-welding for 'the first and the usual rings 10 and 11 or their equivalent or the second.

lt willbe understood that the truncated conical body, with which my device may be used, ma be a continuous hollow shell carried by arge and small heads, a series of spiders of'varying diameters, or a removable covering for either of such bodies, or any other similar foundation.

v lin Fig. 5, 50 re resents the fixed casting of' hereinbefre.

In this construction, the knives 51 are spot-welded at 4 to shell K and are separated by woods 52. Truss lates 53 and 54 are fastened to the woods y screws 55.l

`it 57 I show a truss plate the end 56 of which is bent over to cover the end of the wood and is preferably held thereto by an additional screw 58. Y

` In Fig. 5 the shell K may'be regarded as truss plates 53 and 54.

As shown, the lugs 4:7 are fastened to L by screws `150 and on top of them are the thin woods 151.

In Fig. 8, I show the shell such as L inside of which are built up the knives 102 between which are the Woods 103. In this case I use top truss plates 1 06 and bottom,

truss plates 101 fastened to the Woods by screws 104 and 105.

In Fig. 9, M represents the permanent body of any of the three machines and K is a thin metal body fixed thereto.

51 represents a bar, blade or knife and 52 a wooden support while the truss plate 57 is bent at each end 56 and is fastened to the woods by screws 55, 58and 59.

Fig. 10 shows a beater roll of the usual skeleton construction comprising spiders N mounted on a shaft S. These spiders have slots 7 4 which are properly ali ed, those in the'int'ermediate spiders 7 3-' 3 extending A across and those in the end spiders 72 ext into these slots and are` ring 83 which holds them from radial displacement.

Another advantage of my truss platesI is that where only wood is used and the bars are tipped, as shown by the dotted lines in Fig. 13, the ring 83 is bent and broken. My truss plates revent this.

As shown 1n Fig. 14 my truss plate 95 may be bent over at 96 and fastened to the wood 78 by screws 97 thereby preventing the holding ring 83 from slipping out of the bar slot or notch 8d.

As shown in Fig. 15 my truss plate, especially for beater rolls, may be thick at one part 86 and thin at another part 87 or it may be narrowed in at another part such as 88 or in fact may be made of any suitable vshape to conform to the requirements of strength,-etc.

It may have an end section such as 98 in Fig. 16 or 99 in Fig. 17, or the ed es 111 and 112 may be slotted as shown in ig.` 18 or otherwise reduced as shown at 113 and 114 in Fig. 19 so that if it is necessary to lit them between the bars the laborfof grinding down will be reduced. l

1n the claims, when I speak of bars, I include knives and blades ofall kinds and Vpositioned substantially concentric to the surface of the body which resten the faces offand are fastened to the wooden supports between adjoining bars inedially between their opposite longitudinal ed es.

2. The combination in a built up member for paper pulp engines of a metal body having circular cross sections, the centres of such sections forming a straight axial line with metal bars each of which is disposed in a plane which passes through the axial -line and is fastened at one edge to the metal body, wooden su ports between adjoining bars and said bo y, and metal truss plates positioned substantially concentric to the surface of the body .which rest on the faces of the wooden supports and are fastened between adjoining bars medially betweentheir opposite longitudinal edges. v v

3. The combination in a built up member for paper pulp engines of a metal body having circular cross sections, the centres of bod such sections forming a straight axial line,

with metal bars 'each of which is disposed inA a plane which passes through the axial line, wooden supports between adjoining bars and said body, and metal truss plates positioned substantially concentric to 'the surface of the body and fastened between adjoining bars medially between their op.

posite longitudinal edges.

4. The combination in a -built u member for paper -pulp engines of a metal ody having circular cross sections, the centres of such sections forming a straight axial line,

.with man bars 'radiali -nal edges.

, atomes dis osed edge wise with reference to sai axia line, wooden supports between adjoining bars and said c body, and metal truss plates positioned substantially concentric to the surface of the bod and fastened between adjoining bars' me 'ally between their opposite longitudi- 5. The combination in buia up sheii fo'r Jordan engines of a truncated conical metal body, with metal bars each of which is radially di osed edgewise with lreference to the axis t ereof and has one edge resting ,Gillv on said body, means to prevent displacement of said edge with reference to said body, wooden wedges between adjoining bars and said body, and metal truss plates positioned substantially concentric to the 65 surface of the body which rest on the faces of, and are fastened between adjoining bars medially between their opposite longitudinal ed es.

6. for paper pulp engines of a metal ody hav.-

ing circular cross sections, vthe ycentres of ,l

such sections forming a strai ht axial line, with bars arranged; longitu inally along said body, means to hold the bottoms off@ said bars in place thereon, wooden sup rts between adjoining bars, and a series o protectng metal truss plates extending on top of some of the Wooden su ports and between. the bars entirely around) y. f 7. The combination i a built up member for paper pulp engin of a'body with'longlitudinal slots, lwith bars located in saids ots adjoining bars, a series of truss lates eir- .tending on top' of the woods an, between i the'bars, and means to hold the: bars in place from radial and longitudinal displacementn one part ofthe 30 8. A protecting metal truss plate for the 90 wooden supports of paper pulp enginesliav 'ng screwoles to receive fastening screws.

. Renna LE ROY sonreir. a

l e combination in a builtl u memberrw.

woods resting on the body. betwe'e' se 

